US9731670B2 - Sequentially buckling vehicle crush can - Google Patents

Sequentially buckling vehicle crush can Download PDF

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Publication number
US9731670B2
US9731670B2 US14/993,171 US201614993171A US9731670B2 US 9731670 B2 US9731670 B2 US 9731670B2 US 201614993171 A US201614993171 A US 201614993171A US 9731670 B2 US9731670 B2 US 9731670B2
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US
United States
Prior art keywords
crush
vehicle
set forth
corrugations
distal end
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
US14/993,171
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English (en)
Other versions
US20170197571A1 (en
Inventor
Mohamed Ridha Baccouche
Rahul Arora
Saied Nusier
Saeed David Barbat
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ford Global Technologies LLC
Original Assignee
Ford Global Technologies LLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ford Global Technologies LLC filed Critical Ford Global Technologies LLC
Assigned to FORD GLOBAL TECHNOLOGIES, LLC reassignment FORD GLOBAL TECHNOLOGIES, LLC ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ARORA, RAHUL, BACCOUCHE, MOHAMED RIDHA, BARBAT, SAEED DAVID, NUSIER, SAIED
Priority to US14/993,171 priority Critical patent/US9731670B2/en
Priority to RU2016152231A priority patent/RU2016152231A/ru
Priority to CN201710012641.2A priority patent/CN106956657B/zh
Priority to GB1700423.5A priority patent/GB2547772A/en
Priority to DE102017100465.3A priority patent/DE102017100465B4/de
Priority to MX2017000458A priority patent/MX2017000458A/es
Publication of US20170197571A1 publication Critical patent/US20170197571A1/en
Publication of US9731670B2 publication Critical patent/US9731670B2/en
Application granted granted Critical
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Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
    • B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
    • B60R19/24—Arrangements for mounting bumpers on vehicles
    • B60R19/26—Arrangements for mounting bumpers on vehicles comprising yieldable mounting means
    • B60R19/34—Arrangements for mounting bumpers on vehicles comprising yieldable mounting means destroyed upon impact, e.g. one-shot type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
    • B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
    • B60R19/023—Details
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
    • B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
    • B60R19/24—Arrangements for mounting bumpers on vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
    • B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
    • B60R19/24—Arrangements for mounting bumpers on vehicles
    • B60R19/26—Arrangements for mounting bumpers on vehicles comprising yieldable mounting means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
    • B62D21/15—Understructures, i.e. chassis frame on which a vehicle body may be mounted having impact absorbing means, e.g. a frame designed to permanently or temporarily change shape or dimension upon impact with another body
    • B62D21/152—Front or rear frames

Definitions

  • An end structure of a vehicle may include a bumper assembly, e.g., a front bumper assembly and a rear bumper assembly, connected to a frame of the vehicle.
  • the bumper assembly may include a bumper beam.
  • the bumper beam is relatively rigid and may be impacted during a collision, e.g., a front-end impact.
  • Crush cans may connect the bumper beam to the frame of the vehicle. Crush cans are designed to buckle to absorb energy during the impact.
  • FIG. 2 is a perspective view of a portion of a vehicle including the frame, crush cans, and the bumper beam.
  • FIG. 3 is a perspective view of the crush can.
  • FIG. 4 is a perspective view of the crush can including a rear plate fixed to a proximal end of the crush can and a front plate fixed to a distal end of the crush can.
  • FIG. 6 is a cross-sectional view of a first portion of the crush can.
  • FIG. 8 is a side view of the crush can during a collision with the second portion buckling and the intermediate portion and first portion undeformed.
  • FIG. 9 is a side view of the crush can during the collision with the second portion and intermediate portion buckling and the first portion undeformed.
  • FIG. 10 is side view of the crush can during the collision with the second portion, intermediate portion, and first portion buckling.
  • a vehicle 10 includes a frame 26 and at least one crush can 12 extending along a longitudinal axis A.
  • the crush can 12 includes a first portion 16 fixed relative to and proximal to the frame 26 , a second portion 20 distal to the frame 26 , and an intermediate portion 18 extending from the first portion 16 to the second portion 20 .
  • the crush can 12 includes corrugations 24 elongated along the longitudinal axis A on the first portion 16 and terminating on the intermediate portion 18 .
  • the extent the crush can 12 may buckle can vary. For example, and referring still to FIGS. 8 through 10 , if the force F is of small magnitude, only the second portion 20 of the crush can 12 may buckle, as shown in FIG. 8 . If the force F is of greater magnitude, the second portion 20 and the intermediate portion 18 of the crush can 12 may buckle, as shown in FIG. 9 . Finally, as shown in FIG. 10 , if the force F is of sufficient magnitude, the crush can 12 may buckle sequentially along the entirety of the longitudinal axis A, from the second portion 20 , to the intermediate portion 18 , to the first portion 16 .
  • the frame 26 of the vehicle 10 is shown in FIGS. 1 and 2 .
  • the frame 26 may be of any suitable construction, e.g., unibody, body-on-frame, etc., and may be formed of any suitable material, e.g., steel, aluminum, etc.
  • the crush can 12 may extend from a proximal end 14 on the first portion 16 to the distal end 22 on the second portion 20 .
  • the proximal end 14 of crush can 12 is proximate to the frame 26 of the vehicle 10 and the distal end 22 is distal to the frame 26 of the vehicle 10 .
  • the intermediate portion 18 extends from the first portion 16 to the second portion 20 .
  • the crush can 12 may include a front plate 34 at the distal end 22 , and a rear plate 30 at the proximal end 14 .
  • the front plate 34 may couple the crush can 12 to the bumper beam 28
  • the rear plate 30 may couple the crush can 12 to the frame 26 , as set forth further below.
  • the proximal end 14 and the distal end 22 of the crush can 12 may be directly fixed to the frame 26 and the bumper beam 28 , respectively, e.g., by welding, fastening, etc.
  • the front plate 34 may be fixed to the distal end 22 of the crush can 12 and to the bumper beam 28 .
  • the distal end 22 of the crush can 12 may be fixed to the front plate 34 in a suitable manner, such as welding, fastening, etc.
  • the rear plate 30 may be removably mounted to the frame 26 .
  • the rear plate 30 may define a plurality of holes 32
  • the frame 26 of the vehicle 10 may also define holes (not shown) that align with the holes 32 of the rear plate 30 .
  • fasteners such as threaded bolts 38
  • the rear plate 30 may alternatively be welded to or otherwise fixedly joined to the frame 26 in any suitable manner.
  • the rear plate 30 may be formed of metal, such as steel, aluminum, etc.
  • the front plate 34 may be fixed to the distal end 22 of the crush can 12 and to the bumper beam 28 .
  • the distal end 22 of the crush can 12 may be fixed to the front plate 34 in any suitable manner, such as welding, fastening, etc.
  • the distal end 22 of the crush can 12 may be removably mounted to the bumper beam 28 .
  • the front plate 34 may define a plurality of holes 36
  • the bumper beam 28 may define holes (not shown) that align with the holes 36 of the front plate 34 .
  • Fasteners such as threaded bolts 38 can extend through the holes 36 of the front plate 34 into the aligned holes of the bumper beam 28 to removably mount the front plate 34 to the bumper beam 28 .
  • the front plate 34 may alternatively be welded to or otherwise fixedly joined to the bumper beam 28 in any suitable manner.
  • the front plate 34 may be formed of metal, such as steel, aluminum, etc.
  • the crush can 12 has a substantially constant wall thickness T from the proximal end 14 to the distal end 22 .
  • the wall thickness T may vary between the proximal end 14 and the distal end 22 a minimal amount as a result of tolerances and imperfections from the manufacturing process, e.g., 1-5%.
  • the wall thickness may be about 1.1 millimeters.
  • the crush can 12 may be manufactured from ultra high strength steel (“UHSS”).
  • UHSS ultra high strength steel
  • the crush can 12 may be formed of Boron steel having a yield strength of 1500 MPa.
  • the crush can 12 has a high strength-to-weight ratio and may be lightweight, and still be designed to maintain a sequence of collapse from the second portion 20 , to the intermediate portion 18 , to the first portion 16 , as set forth further below.
  • the crush can 12 may taper from the proximal end 14 to the distal end 22 .
  • the taper may be constant from the proximal end 14 to the distal end 22 .
  • the first portion 16 , the intermediate portion 18 , and the second portion 20 may each taper.
  • the crush can 12 may be fabricated from a plurality of pieces that are fixed together, e.g., welded.
  • the crush can 12 may be fabricated from two pieces, a first piece 40 and a second piece 42 .
  • FIG. 5 shows the second portion 20 of crush can 12 having a polygonal cross-sectional shape defining a plurality of sides 44 .
  • the polygonal cross-sectional shape may be octagonal, having eight sides 44 .
  • Each side 44 of the crush can 12 has a length L. The length L of each side may vary along the longitudinal axis A, as set forth further below.
  • Some of the sides 44 are also spines 46 that extend from the proximal end 14 to the distal end 22 of the crush can 12 , as shown in FIGS. 3 and 7 .
  • the spines 46 taper from the proximal end 14 to the distal end 22 , as shown in FIGS. 3 and 5-6 .
  • the length L of the spines 46 decrease from the proximal end 14 to the distal end 22 .
  • the ribs 48 may extend from the proximal end 14 of the crush can 12 to the second portion 20 , e.g., from the proximal end 14 to an interface of the intermediate portion 18 and the second portion 20 .
  • Each rib 48 may have a constant cross-section along the first portion 16 , i.e., from the proximal end 14 to the intermediate portion 18 .
  • Each rib 48 may taper along the intermediate portion 18 .
  • each rib 48 may taper from the first portion 16 to the second portion 20 , and may terminate at the interface between the intermediate portion 18 and the second portion 20 .
  • the second portion 20 may be free of ribs 48 .
  • the corrugations 24 are elongated along the longitudinal axis A.
  • One corrugation 24 may be disposed between each adjacent rib 48 and spine 46 .
  • the corrugations 24 extend along the first portion 16 and the intermediate portion 18 .
  • the corrugations 24 may start at the proximal end 14 .
  • the corrugations 24 may terminate on the intermediate portion 18 .
  • the corrugations 24 may terminate at the interface of the intermediate portion 18 and the second portion 20 , as shown in the Figures.
  • the second portion 20 may be free of corrugations 24 , as shown in FIGS. 3 and 5 .
  • the corrugations 24 may extend continuously from the proximal end 14 to the interface of the intermediate portion 18 and the second portion 20 .
  • the corrugations 24 may taper from the first portion 16 to the second portion 20 , as shown in FIG. 7 , e.g., from the proximal end 14 to the interface of the intermediate portion 18 and the second portion 20 .
  • the corrugations 24 taper toward the longitudinal axis A from the first portion 16 to the second portion 20 .
  • the taper of the corrugations 24 may be constant, as shown in the Figures.
  • the corrugations 24 may resist buckling of the sides 44 .
  • the corrugations 24 provide greater reinforcement when the corrugation 24 is relatively deep, i.e., at the proximal end 14 , and provide less reinforcement when the corrugation 24 is relatively shallow, i.e., at the interface of the intermediate portion 18 and the second portion 20 .
  • the corrugations 24 , the spines 46 , and the ribs 48 provide the crush can 12 with axial stability. Specifically, upon application of the force F, the corrugations 24 , spines 46 , and ribs 48 guide the buckling of the crush can 12 to proceed in sequence from the second portion 20 , to the intermediate portion 18 , to the first portion 16 .
  • the sides 44 of the crush can 12 may vary along the longitudinal axis A. Specifically, the sides 44 may narrow in a direction from the proximal end 14 to the distal end 22 .
  • the collapse of the crush can 12 is a function of a ratio of wall thickness T to the length L of one side 44 . Specifically, upon an application of force along the longitudinal axis A at the distal end 22 , the crush can 12 buckles first at the side 44 that has the smallest T/L ratio. Since the second portion 20 is free of corrugations 24 and ribs 48 , the length L of the sides 44 of the crush can 12 are the greatest at the second portion 20 .
  • the ratio of T/L is the smallest at the second portion 20 , which results in the second portion 20 buckling before the intermediate portion 18 and the first portion 16 upon application of force along the longitudinal axis A at the distal end 22 .
  • the corrugations 24 taper from the proximal end 14 to the second portion 20 , as set forth above, the corrugations 24 provide less reinforcement to the intermediate portion 18 and greater reinforcement to the first portion 16 . As such, the corrugations 24 encourage buckling of the intermediate portion 18 before buckling of the first portion 16 .
  • the taper of the ribs 48 along the intermediate portion 18 and the constant cross-section of the ribs 48 along the first portion 16 also encourages the intermediate portion 18 to buckle before the first portion 16 .
  • UHSS such as Boron steel

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Body Structure For Vehicles (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Vibration Dampers (AREA)
US14/993,171 2016-01-12 2016-01-12 Sequentially buckling vehicle crush can Active US9731670B2 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
US14/993,171 US9731670B2 (en) 2016-01-12 2016-01-12 Sequentially buckling vehicle crush can
RU2016152231A RU2016152231A (ru) 2016-01-12 2016-12-29 Транспортное средство и краш-бокс транспортного средства
CN201710012641.2A CN106956657B (zh) 2016-01-12 2017-01-06 顺序地弯折的车辆粉碎罐
GB1700423.5A GB2547772A (en) 2016-01-12 2017-01-10 Sequentially buckling vehicle crush can
DE102017100465.3A DE102017100465B4 (de) 2016-01-12 2017-01-11 Sequenziell verbeulende fahrzeugknautschdose
MX2017000458A MX2017000458A (es) 2016-01-12 2017-01-11 Lata de choque para vehiculo que colapsa de manera secuencial.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US14/993,171 US9731670B2 (en) 2016-01-12 2016-01-12 Sequentially buckling vehicle crush can

Publications (2)

Publication Number Publication Date
US20170197571A1 US20170197571A1 (en) 2017-07-13
US9731670B2 true US9731670B2 (en) 2017-08-15

Family

ID=58463700

Family Applications (1)

Application Number Title Priority Date Filing Date
US14/993,171 Active US9731670B2 (en) 2016-01-12 2016-01-12 Sequentially buckling vehicle crush can

Country Status (6)

Country Link
US (1) US9731670B2 (ru)
CN (1) CN106956657B (ru)
DE (1) DE102017100465B4 (ru)
GB (1) GB2547772A (ru)
MX (1) MX2017000458A (ru)
RU (1) RU2016152231A (ru)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6681761B2 (ja) * 2016-03-25 2020-04-15 アイシン精機株式会社 クラッシュボックス
US10611325B2 (en) * 2017-11-21 2020-04-07 Ford Global Technologies, Llc Bumper with pedestrian safety features
JP2022036771A (ja) * 2020-08-24 2022-03-08 トヨタ自動車株式会社 バンパ装置

Citations (13)

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Publication number Priority date Publication date Assignee Title
US3995901A (en) 1974-06-24 1976-12-07 E. I. Dupont De Nemours And Company Energy-absorbing systems
US6406088B1 (en) 1998-11-26 2002-06-18 Lotus Cars Limited Crash rail for a vehicle
US20080030031A1 (en) * 2004-06-09 2008-02-07 Johan Nilsson Crash Box for a Vehicle
US20080272529A1 (en) 2007-05-01 2008-11-06 Christophe Chervin Jounce bumpers made by corrugated extrusion
US7617916B2 (en) 2007-10-17 2009-11-17 Shape Corp. Tapered crushable polygonal structure
US20110015902A1 (en) * 2008-09-19 2011-01-20 Ford Global Technologies, Llc Twelve-Cornered Strengthening Member
US8123263B2 (en) 2001-09-27 2012-02-28 Shape Corp. Energy management beam
US8287013B2 (en) * 2007-11-05 2012-10-16 Toyoda Iron Works Co., Ltd. Impact absorbing member for vehicle
US20130001963A1 (en) * 2009-11-16 2013-01-03 Shinichi Haneda Shock absorber and bumper device for vehicle
DE102012020318A1 (de) 2012-03-02 2013-09-05 Deutsches Zentrum für Luft- und Raumfahrt e.V. Fahrzeug
US20130300138A1 (en) 2010-09-28 2013-11-14 Magna International Inc. Scalable Crush Can For Vehicle
US20150314743A1 (en) * 2012-12-18 2015-11-05 Toyota Jidosha Kabushiki Kaisha Vehicle end section structure
US20160121830A1 (en) * 2014-10-31 2016-05-05 Benteler Automobil Technik Gmbh Crashbox for a bumper system of a motor vehicle

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DE19711647C2 (de) * 1997-03-20 2002-05-02 Daimler Chrysler Ag Energieverzehrendes Element, insbesondere zum Stoßenergieabbau in Kraftfahrzeugen
JP2002155981A (ja) * 2000-11-21 2002-05-31 Aisin Seiki Co Ltd 衝撃吸収部材及びバンパ
JP5330674B2 (ja) * 2007-11-05 2013-10-30 豊田鉄工株式会社 クラッシュボックス
US7959197B2 (en) * 2008-10-30 2011-06-14 Shape Corp. Bumper beam with multi-concavity-defining cross section
DE102010035619B4 (de) 2010-08-26 2022-04-07 Benteler Automobiltechnik Gmbh Kraftfahrzeug mit einem Deformationselement
JP5729074B2 (ja) 2011-03-28 2015-06-03 Ｊｆｅスチール株式会社 衝撃吸収部材
WO2013080864A1 (ja) * 2011-11-29 2013-06-06 トヨタ車体株式会社 車両の衝撃吸収構造
CN203854597U (zh) * 2014-04-24 2014-10-01 奇瑞汽车股份有限公司 一种汽车吸能盒及具有其的汽车
US9630582B1 (en) * 2016-03-10 2017-04-25 Ford Global Technologies, Llc Crush-can with corrugated core

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3995901A (en) 1974-06-24 1976-12-07 E. I. Dupont De Nemours And Company Energy-absorbing systems
US6406088B1 (en) 1998-11-26 2002-06-18 Lotus Cars Limited Crash rail for a vehicle
US8123263B2 (en) 2001-09-27 2012-02-28 Shape Corp. Energy management beam
US20080030031A1 (en) * 2004-06-09 2008-02-07 Johan Nilsson Crash Box for a Vehicle
US20080272529A1 (en) 2007-05-01 2008-11-06 Christophe Chervin Jounce bumpers made by corrugated extrusion
US7617916B2 (en) 2007-10-17 2009-11-17 Shape Corp. Tapered crushable polygonal structure
US8287013B2 (en) * 2007-11-05 2012-10-16 Toyoda Iron Works Co., Ltd. Impact absorbing member for vehicle
US20110015902A1 (en) * 2008-09-19 2011-01-20 Ford Global Technologies, Llc Twelve-Cornered Strengthening Member
US20130001963A1 (en) * 2009-11-16 2013-01-03 Shinichi Haneda Shock absorber and bumper device for vehicle
US20130300138A1 (en) 2010-09-28 2013-11-14 Magna International Inc. Scalable Crush Can For Vehicle
DE102012020318A1 (de) 2012-03-02 2013-09-05 Deutsches Zentrum für Luft- und Raumfahrt e.V. Fahrzeug
US20150314743A1 (en) * 2012-12-18 2015-11-05 Toyota Jidosha Kabushiki Kaisha Vehicle end section structure
US20160121830A1 (en) * 2014-10-31 2016-05-05 Benteler Automobil Technik Gmbh Crashbox for a bumper system of a motor vehicle

Also Published As

Publication number Publication date
US20170197571A1 (en) 2017-07-13
RU2016152231A (ru) 2018-06-29
MX2017000458A (es) 2017-08-16
CN106956657B (zh) 2022-02-01
DE102017100465A1 (de) 2017-07-13
CN106956657A (zh) 2017-07-18
DE102017100465B4 (de) 2024-06-27
GB2547772A (en) 2017-08-30
GB201700423D0 (en) 2017-02-22

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